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Not enough packing or not tamped in enough. Possibly cracked pipe.
by thoroughly sealing up the crack
This depends on the size and the location of the leak. It depends because a leak on the straight piece of the pipe will differ from a leak on the joint of the pipe. It also depends on the corrosion of the pipe and the extent as to how bad it is.
A pipe which believe or not crack is smoked out of!
for the pipe to freeze and crack
Welding, Brazing ,threading with Teflon tape (unless it is gas)
Granted that the force was enough to crack the pipe, it would crack in the middle.
The word 'leak' is both a noun (leak, leaks) and a verb (leak, leaks, leaking, leaked).Examples:We need to fix the leak in the roof. (noun)There was a crack in the jar that allowed the contents to leak in the cupboard. (verb)
Not really. It has to withstand from 300 to 450 psi pressure. In spite of the advertisements, glue or tape won't do it. Refrigeration copper pipe is heavier than water pipe and silver solder is used rather than lead/tin.
Easiest way to connect lead to copper /brass is a wiped joint consisting 40 - 60 solder alloy as this gives a longer pasty range
You can stop - or at least slow down - a leak to prevent waterdamage until a plumber can do the complete repair. Thesesteps are for a temporary fix, not a long-term cure.Tighten a threaded joint with a pipe wrench if the leak is there.
Teflon tape can be used on any type of liquid joint. However, it is strictly speaking a lubricant, NOT a sealant, and is a cheap and nasty way of sealing joints. - The proper sealant for any liquid pipe joint is a pipe joint compound such as Whitlam's or Oatey's Blue Joint Compound.